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HOW TO BUILD YOUR  DC  METER:

1) Meter Sweep or Deflection Angle:

         90 ˚ ,    240 ˚ or   250 ˚

              Linear Characteristics (1.5%) is within 0˚ and 90˚ in KH-100 and KH-200

              Linear Characteristics (1.5%, 1.0%) is within 0˚ and 250˚ in KH-250

              Beyond the limitation, the accuracy will be poor.

 

2) Choose the pivot type meter movement:

       Economic consideration:   KH-100 (90˚)--Except NR, K, SV, SM type

       Standard  consideration:   KH-200 (90˚),  KH-250 (240˚ or 250˚)

       Better EMI consideration:  with laminated Yoke KH-200 (90 ˚),  KH-250 (240˚ or 250˚)

               

3) Customer Specified coil resistance and series resistor's value, if applied

      Without specified the resistance value, we use our standard coil

       resistance value and fix resistor as shown in our table

 

4) Select Pointer Type, Color, and  Length (from pivot center to the tip )

    Without specified the height of the pointer,  we use our standard pointer support.

  

5) Jewel Bearing: (friction contact and damping to the pointer)

     Standard use:  Japanese made Jewel Bearing (without spring loaded)

      Special  consideration: (Upon customer request)

             Spring Loaded "Glass" or "Ceramic" Jewel Bearing (Japanese Made)

                   

6) Accuracy:

        Class 1.0 or 1.5 :  Japanese Sumitomo made  the First Class Magnet

        Class 2.5:   Japanese Sumitomo made  the Second Class  Magnet

        Class 3-5:  Japanese Sumitomo made  the Third Class Magnet

                               

7) Operating Range--Easy Reading Scale Plate consideration

        It should be within 2/3 of rating range.

 

8) Choose suitable size enclosure or Model type Selection

 

                  | KH-100 & KH-200 | KH-250 |

       

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COPYRIGHT © 1997-2001 HER RONG ELECTRIC WORKS CO., LTD.

LAST UPDATE :2010/03/17                     IT Manager: Mr. C.K. Hsieh